{
  "id": "0907.4726",
  "version": "v2",
  "published": "2009-07-27T18:30:06.000Z",
  "updated": "2009-10-27T20:08:40.000Z",
  "title": "Para-ortho transition of artificial H$_2$ molecule in lateral quantum dots doped with magnetic impurities",
  "authors": [
    "Ramin M. Abolfath"
  ],
  "comment": "5 pages, 3 figures",
  "journal": "Phys. Rev. B 80, 165332 (2009)",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We present the magnetic phase diagram of artificial H$_2$ molecule in lateral quantum dots doped with magnetic impurities as a function of external magnetic field and plunger gate voltage. The onset of Mn-Mn antiferromagnetic-ferromagnetic transition follows the electron spin singlet-triplet transition. We deploy a configuration-interaction method to exactly diagonalize the electron-Mn Hamiltonian and map it to an effective Mn-Mn Heisenberg Hamiltonian. We find that Mn-Mn exchange coupling can be described by RKKY-interaction/magnetic-polaron in weak/strong electron-Mn coupling at low/high magnetic fields.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-10-27T20:08:40.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Lp",
      "73.63.Kv",
      "75.50.Gg"
    ],
    "keywords": [
      "lateral quantum dots",
      "magnetic impurities",
      "para-ortho transition",
      "artificial",
      "electron spin singlet-triplet transition"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "doi": "10.1103/PhysRevB.80.165332",
      "year": 2009,
      "month": "Oct",
      "volume": 80,
      "number": 16,
      "pages": 165332
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvB..80p5332A"
    }
  }
}